Contents: (Small 24/2016)

A microfl uidic stamping method to form functional shapes on a cross section in fi breshaped fl ow is presented by D. H. Yoon and co-workers on page 3224.Microfl uidic stamping and overstamping allowed various cross sectional shapes on the threedimensional fl ow.Dimension of the fl ows is controlled via a change in combination of 3D structures and fl uidic conditions, which correspond to stamp type and stamping force. SupercapacitorsOn page 3235, Y.-E.Miao, T. X. Liu and co-workers successfully anchor ultrathin nickel-cobalt layered double hydroxide (Ni-Co LDH) nanosheets onto the surface of nitrogen-doped carbonized bacterial cellulose (CBC-N) nanofi bers to form CBC-N@ LDH composite electrodes.The thus assembled asymmetric supercapacitor exhibits a high specifi c energy of 36.3Wh kg -1 at a power density of 800.2 W kg -1 for potential practical applications. MicroparticlesMicroparticles carrying quick response (QR) barcodes are fabricated by J. Wang and co-workers on page 3259, using a massive coding of dissociated elements (MiCODE) technology.Each microparticle can bear a special custom-designed QR code that enables encryption or tagging with unlimited multiplexity, and the QR code can be easily read by cellphone applications.The utility of MiCODE particles in multiplexed DNA detection and microtagging for anti-counterfeiting is explored.